Apparatus for cutting metal into sections



Nam E1, 1941 H. 1. MORRIS 2,262,619,

APPARATUS FOR cu'r'rme METAL INTO SECTIONS Original Filed March 11, 1.937 3 Sheets-Sheet 1 Nov. 11, 1941. H. I. ORRIS; 2,262,619

APPARATUS non cu'r'rme METAL 111120 SECTIONS Original Filed March 11,19s? 3 sheets-sheet 2 Nov, 11; 1941. H.'!. MORRIS APPARATUS FOR GUTTINGMETAL INTO SECTICNS Original Filed March 11, 1937 3 Sheets-Sheet 3 Fig:'7."

m a m H 0 .1 I8 2 km F I s Z, 1 1 l 1 1 Q a M. u .w 9 l 1 Z a! 9: a I 5.n m w m I m m 4. l I I I u w 5 1/1 5 O 5 v I 4 H m 1 1 F u u I PatentedNov. 11, 1941 APPARATUS FOR CUTTING METAL INTO SECTIONS Howard 1.Morris, Lakewood, Ohio, assignor to The Yoder Company, Cleveland, Ohio,a corporation of Ohio Original application March 11, 1937,

Divided and this application May 8,

Serial No.

1939, Serial No. 272,354

16 Claims.

This invention relates to a machine for automatically cutting materialinto predetermined lengths, more particularly a machine adapted to berelated to a continuously operating material forming machine andoperated conjointly therewith so that the formed material iscontinuously supplied and while inmovement may be cut into lengths anddischarged to avoid re-handling and permit ready stacking. For purposesof illustration, the formed material is shown as consisting of a pipewhich may be of any desired diameter, but in the use of the term pipe itis for purposes of description and not as a limitation of the invention.thereof. I02 indicates a saw or cutter fixed to This application is adivision of my applica- 15 the motor shaft and arranged to sever thework tion filed March 11, 1937, Serial No. 130,322.- A when the motorand its supporting arms are One object of the invention is to provide anmoved on the ways I00 to the position shown in improved machine of thistype wherein the cutdotted lines in Fig. 2. .I03 indicates a standardoff mechanism is arranged to move with the mamounted on the slide 99 andprovided at'its terial and automatically connect itself to the upper endwith a work clamping jaw I04 and a formed material and automaticallydisconnect itmovable jaw I044: pivoted at its inner side on the selftherefrom. standard I09 (see Fig. 2) and arranged to clamp Anotherobject of the invention is to provide and release the work A in theforward movementan improved machine of this type wherein the of theslide 99. In this-form of construction the cutter or tool is mounted ona slide and both the 25 movement of the slide 99 in either direction,the

tool and slide are operated hydraulically and controlled to effectmovement of the slide and the work while cutting thereof takes place.

Other objects of the invention will be apparent to those skilled in theart to which my invention relates from the following description takenin connection with the accompanying drawings,

wherein Fig. 1 is a side elevation showing a machine embodying myinvention.

Fig. 2 is a section on theline 2--2 of Fig. 1, enlarged, parts beingbroken away.

Fig. 3 is a section on the line 3-3 of Fig. 1.

Fig. 4 is a plan view of the parts shown'in Fig. 3.

Fig. 5 is a section on enlarged.

Fig. 6 is a fragmentary sectional view of one of the valves.

Fig. 'l is a diagrammatic view showing the electrical wiring for themachine.

In the drawings, I indicates a portion of amachine for continuouslyforming material into a predetermined cross sectional shape for deliveryto a cut-oil mechanism indicated as an entirety at 2. The pre-formedmaterial herein chosen for illustration consists of pipe A which is fedforwardly by one-or more pairs of feed rolls 3, 3', to and through amechanism which may be of a P type to size the pipe. to reduce itsdiameter or the line 5-5 of Fig; 1,

to eliminate any tendency of the pipe to spring laterally; also, thepipe as delivered may be of any desired form, that is, its edges may beconnected (welded or interlocked) or lapped or related edge to edgeready for welding.

Of the cut-off machine 2, 5' indicates a frame having guides 98 for aslide 99. The slide 99 is provided with transverse blocks 99a havingways I00. its opposite ends in collars I02 provided with depending armsIOIa having shoes IOIb which engage the ways I00 to slldably support themotor IN on the slide 99 for movement transversely operation of theclamping jaw 104a and the movement of the motor IOI and cutter I02 ineither direction are effected by fluid pressure, preferably hydraulicmeans and the valves for 30 the latter are operated by solenoids whichare controlled by electric switches, as later set forth.-

l'l indicates an angle supported on the frame 5' at one end by a bracketIla. The bracket 11' may be of any desired length depending upon 35 thelongest section of the pipe A to be severed.

I05 indicates a supporting member having lugs I06 adjustably secured bybolts I01 to one side of the angle T1. The member 'I05supports a shaftI08 on which is pivoted a wing I09 normally biased by a spring IIOagainst a stop III, in

which position the wing I09 is disposed in the path of movement of thepipe A so that its'outer or advancing end may engage with and operatethe wing I09 counter-clockwise as viewed in Fig. 4.

The hub of the wing I09 -is provided with a tail II3 on which is pivoteda switch operating device III, the device being in engagement with ashoulder H3 on the tail so that the device moves with the tail H3 tooperate the arm N4 of a switch (later referred to) to close an electriccircuit, but is free toride the the tail returns to normal position.

The normal position of the wing I09 is shown in d tted lines in Fig. 4and is arranged to op- IOI indicates an electric motor mounted at.

switch arm when a erate" the adjacent switch when the wing is moved tothe position shown in full lines. As

the free end of'the pipe A, as it feeds forwardly, may be disposed atvarying positions transversely .of the angle 11', this arrangementinsures operation of the switch at a predetermined position oi! the wingand the cutting of the pipe sections of a predetermined length, since itwill be apparent that while the pipe may contact the wing at any pointthereon, the wing does not operate the switch until it has been moved tothe position shown. g

The hydraulic means, valve mechanisms for the supply and discharge oftheffluid and the controlling means for the valve mechanisms are similarin construction, each comprising a piston mounted in a cylinder havingfluid connections at its opposite ends to operate the piston therein ineither direction, a valve mechanism for supplying the fluid, such' asoil, through one connection and its discharge through theotherconnection and a controlling means for reversing the valve tochange the fluid supply and discharge.-

The piston II for operating the slide 99 is mounted in a cylinder H6 andthe valve mechanism for the cylinder I I6 is indicated as an entirety at1, and is connected thereto by pipes II8, 8'. A rod II5a extends throughonehead of the cylinder H6 and connects the piston II5 to an arm II5bdepending from the slide 99. The piston I I9 for operating the jaw MM ismounted in a cylinder I20 and the valve mechanism for the cylinder I20is indicated as an entirety at I2Iv and is connected thereto by pipesI22, I22. A rod 911 extends through one head of the cylinder I20 toconnect the piston II9 to one arm of a lever II9b, pivoted on thestandard I03, the p other arm of the lever II9b being connected by alinkN90 to the outer end of the jaw I04a to raise and lower the latter,whereby the pipe is clamped or released. The piston I 23 for operatingthe motor IM and cutter I02 is mounted in a cylinder I24 and they valvemechanism for the cylinder. I24 is indicated as an entirety at I25 andis connected thereto by pipes I26, I26. A rod I23'a extends through onehead of the cylinder I24 to connect the piston I23 to a lug I23bintegral with the lower section of a split collar I230 clamped aroundthe motor I0 I.

The valve mechanisms 1, I2I and I25 are similar in construction andoperation, one thereof being shown in section in Fig. 6. Referring toand discharged from the latter through the pipe H8. The plunger I32 ismoved from one position to the other position by one of the solenoidsI33,

133a, the coil of'each of which is energized momentarily by theoperation of a spring operated switch to close an electric circuit.

, I34, I34a, indicate the switches for closing thecircuits whichenergize the coils of thesolnoids the valve mechanism I25; each switchbeing operated by a trip I36 flxed to theslide 99.

Operation-Figs. l and 7 show the position of the pipe A following itsengagement with the wing I09 and movement of the latter to operate theswitch arm H4 and close the circuit I3'I for the coil of the solenoidI33. As shown in Figs. 6 and v 7, the valve plunger I32 has been movedto the right so that the fluid flows through pipe II8 to the adjacentend of the cylinder 116, and permits fluid discharge through pipe 8',the effect of which isto move the slide 99 forward toward the left,asviewed in Fig. 7. In the forward movement of the slide 99, the tripI35 engages with and operates the switch I35 which in turn closes thecircuit I38 for the coil of.the solenoid I33a connected to the valveplunger I32 of valve mechanism I2 I, which supplies fluid through pipeI22 to the cylinder I20 and permits fluid discharge through pipe I22 andefiects operation oithe jaw I040. to clamp the pipe A. In the continuedforward movement of the slide 99, the trip I30 engages with and operatesthe switch I36,'which Fig. 6, I21 indicates the valve casinghaving aninlet I23 and ports at opposite sides of the .inlet to which the supplyand discharge pipes for the adjacent cylinder are connected (forexample, the pipes H8, 8', leading to. the opposite ends of in turncloses the circuit I39 for the coil of the solenoid I 33 connected tothe valve plunger I32 of valve mechanism I25, which supplies fluidthrough pipe I26 to the cylinder I24 and permits fluid discharge throughpipe I26 and efiects movement of the cutter I02, whereby the lattersevers the pipe A (see dotted lines in Fig. 2). Next, the trip I36engages with and operates the switch I36a, which in turn closes thecircuit I39 for the coil of the solenoid I33a connected to the ,valveplunger I32 01 valve mechanism I25, so

' that the fluid is supplied through pipe I26 to the the cylinder H6);the .inlet I28 being connected by a pipe I28' to the outlet side of apump indicated as an entirety at I29, which is continuously driven by asuitable motor I30. I3I indicates the outlet from'the valve casing I21and connected by a pipe I3I' to the inlet side of the pump I29. "Thevalve casing is provided with a plunger I32 which extends through theopposite end walls thereof for connectionwith the cores of solenoidsI33, I 33a. The plunger I 32 is provided with spaced collars I32 whichin one position of the plunger connect the'fluid inlet I28 to one pipeIIB to supply the fluid to one end of the adjacent cylinder and permitsfluid discharge through pipe- I 26 to move the cutter to its firstposition (see full lines in Fig. 2). Next, the-trip I35 engages with andoperates the switch I35a, which in turn closes the circuit I38 for thecoil of the solenoid I 33 connected to the valve plunger of valvemechanism I 2 I which supplies fluid through pipe I22 to the cylinderI20 and permits fluid discharge through pipe I22. and effects movementof the jaw I04a to release the pipe A. Next, and finally, the advancingend of the slide 99 engages with and operates the switch I34a, which inturn closes the circuit I3'I' for the coil of the solenoid I330,connected .to the valve plunger I32 of valve discharge through pipe II8andv effects movement sition of the plunger -I32,'these connections arereversed, so the fluid is supplied through pipe 8' to the opposite endof the adjacent cylinder of the slide 99-rearwardly to its first orstarting position; the trips I35, I36, being so mounted Q11 the slide 99that they ride the arms of their related switches in the rearwardmovement of the slide.

As shown, one contact of each switch is connected by a lead to oneelectric supply main I40 and the corresponding ends of the coils of thesolenoids are connected by leads to the other electric supply main I40.

The pump I29 is constructed to maintain a predetermined pressure in thefluid system and to automatically adjust itself to the varyingconditions whereby the pressure will be substantially constant, thisoperation being advantageous since, from the foregoing description, itwill be understood that alter the fluid has been supplied to either endof each cylinder I20 and I23 and in some instances (dependent upon thelength of the work sections) to either end of the cylinder H6, and movedthe piston therein to the remote end of the cylinder the flowof fluid toand from that cylinder is arrested until the valve mechanism connectedthereto is reversed. Such stoppage of fluid flow sets up a backpressure, the'eilfect of which is to correspondingly reduce the outputof the pump I29. The pump herein chosen for illustration comprises thefollowing: I4I indicates a casing. I42 indicates a shaft suitablyconnected to the shaft of the motor I30. The shaft I42 is connected to arotor I43 formed in its periphery with a plurality of substantiallyradially disposed slots I 43a in which are slidably mounted vanes I44,normally pressed outwardly by the pressure of the fluid which isadmitted to the slots I43a behind the vanes. The vanes I44 engage withthe inner wall of a cylinder I45 and divide the space between the rotorI43 and cylinder into pumping compartments. At diametrically oppositesides the cylinder I45 is provided with blocks I46 the outer walls ofwhich have sliding engagement with guide surfaces on blocks I4'Isuitably supported in the side walls of the casing I4I. By preference,anti-friction elements, such as rollers supported at their ends in boxesmay be provided between the surfaces of adjacent blocks. The cylinderI45 is supported on a coiled spring I48 which normally tends to move thecylinder I45 upwardly, the eifect of which is to dispose the cylinder ineccentric relation to the rotor, and thereby'increase the fluid output,

with the rotor revolving at constant speed. The eccentric relation ofthe cylinder I45 to the rotor I43 is controlled by a plunger I45, havinga head I50, which serves as a piston,'-mounted in a cylinder II. Aspring I52 engaging the head I50, normally tends to move the plungerdownwardly in opposition to the spring I48, to decrease the eccentricrelation between the cylinder I45 and rotor I43, whereas fluid atdischarge pressure, admitted into the cylinder below the head I50,through ducts I53, tends to movev the plunger upwardly, which permitsthe spring I48 to-.'increase the eccentric relation. Accordingly,

movement of the piston due to increase or decrease of the fluid pressureand position of the cylinder I is automatically controlled, the effectof which is to maintain the pressure in the system substantiallyconstant.

By proper adjustment of the spring I52, which adjustment is provided forby a screw I54 mounted in the top wall of the cap I55 related to thecylinder I5I and enclosing the spring, the pressure to be maintained inthe system may be raised or lowered. No claim is made herein to theconstruction of the pump I29 for which for operating the switches have apredetermined relation, the slide and cutter move a predetermineddistance in each operation.

To those skilled in the art to which my invention relates, many changesin construction and widely differing embodiments and applications of theinvention will suggest themselves without departing from the spirit andscope or. the invention. My description and the disclosures herein arepurely illustrative and are not intended to be in any sense limiting.

What I claim is;

1. In apparatus of the class described, the combination of a support, aslide reciprocatably mounted thereon, means for continuously supplyingwork relative to said slide, a fluid operated mechanism on said slidefor clamping the work, a fluid operated mechanism, including a drivencutter, mounted on said slide for cutting the work into sections, afluid operated mechanism for reciprocating said slide, valve means forcontrolling the supply of fluid to each said mechanism and the dischargeof fluid therefrom, means including a device arranged in the path ofmovement of the work and a device carried by said slide for operatingthe valve means for said slide reciprocating mechanism, and separatemeans for operating the valve means for said clamping mechanism and saidcutting mechanism, each of the last referred to means including a devicecarried by said slide.

2.-In. apparatus of the class described, the combination of a support, aslide reciprocatably mounted thereon, means for continuously supplyingworkrelative to said slide, a fluid operated mechanism on said slide forclamping the work, a fluid operated mechanism, including a drivencutter, mounted on said slide for cutting the work into sections, afluid operated mechanism for reciprocating said slide, valve means forcontrolling the supply of fluid to each said mechanism and the dischargeof fluid therefrom,

electrical means including a pair of switches for operating the valveelement of each said valve means, a device movably mounted on saidsupport arranged in the path of movement of the 3. In apparatus of theclass described, the

combination of a support, a slide reciprocatably mounted thereon, meansfor continuously supplying work relative to said slide, a fluid operatedmechanism on said slide for clamping the work,

a fluid operated mechanism, including a driven cutter, mounted on saidslide for cutting the work into sections, a fluid operated mechanism forreciprocating said slide, a four-way valve means tor controlling thesupply of fluid to each said mechanism and the discharge of fluidtherefrom.

solenoidsfor operating the valve element of each said valve means,electrical circuits for said solenoids, including a switch for eachcircuit, devices, v

' one'arranged in the path of movement of the work and the other devicecarried by said slide for operating the switches to close the circuitsfor the solenoids-related to the valve means for said slidereciprocating vmechanism, and separate devices on said slide onearranged to operate the switches to close the circuits for the solenoidsrelated to the valve means for said'clamping mechanism and the otherarranged to operate the switches to close the circuits for the solenoidsrelated to the valve mechanism for said cutting mechanism.

4. In apparatus of the class described, the combination 'oif a support,a slide reciprocatably mounted thereon, means for continuously supplyingwork relative to said slide, a fluid operated mechanism on said slidefor clamping the work, a fluid operated mechanism, including a drivencutter, mounted on said slide for cutting the work into sections, afluid operated mechanism for reciprocating said slide, valve means forcontrol-' .ling the supply of fluid'to each said mechanism and thedischarge of fluid therefrom, means including a device arranged in thepath of movement of the work and a device carried by said slide foroperating the valve means for said slide reciprocating mechanism,separate means for operating the 'valve means for said clampingmechanism and said cutting mechanism, each of thedast referred to'meansincluding a device carried by said slide, and automatically operatingmeans for supplying fluid to said mechanisms at. a predeterminedconstant pressure.

5. In apparatus of the class described, the combination of a support, aslide reciprocatably' mounted thereon, means for continuously 'supplyingwork relative to said slide, a fluid operated mechanism on said slidei'orclamping the work,

i a fluid operated mechanism, including a driven cutter, mounted on saidslide for cutting the workinto sections; a fluid operated mechanism forreciprocating said slide, a four-way valve v means for controlling thesupply of fluid to each said mechanism and the discharge of fluidtherefrom, each said mechanism including a cylinder and a piston mountedtherein and connections from each of said cylinders to the adjacentvalve means,'and each valve means including an element for alternatelycontrolling the supply and discharge of the fluid through saidconnections with-the adjacent cylinder, means including a devicearranged in the path of movement of the work and a device carried bysaid slide for-operating the elementof the valve means for said slidereciprocating mechanism,- separate means 'i'or operating the element ofthe valvemeans for said clamping mechanism and the element of the valvemeans i.'or said-cutting mechanism, each 01' the last referred to meansincluding a device carried .by said slide, and automatically operatingmeans for supplying fluid to said mechanisms at a predetermined constantpressure.

6. In apparatus of the class described, the combination oil a support, aslide reciprocatably mounted thereon, means for continuously supplyingwork relativeto, said slide, 'a fluid operated mechanism, including adriven cutter,-mounted on said slide for cutting the work into sections,a

, fluid operated mechanism for-reciprocating said slide, a valve meansfor controlling the supply of fluid to each said m and the discharge Qranged in the path of movement of the'work mounted thereon, means forcontinuously supplying work relative to said slide, a driven cuttermovably mounted on said slide for cutting the work into sections, adouble acting cylinder on,

said slide for moving the cutter into and out of cutting relation to thework, a double acting cylinder for reciprocating said slide, four-wayvalves each vhaving fluidconnections with the opposite ends of one ofsaid cylinders, means ineluding a device arranged in the path ofmovement'oi' ,the work and a device carried by said slide for operatingthe element of the valve for said slide reciprocating cylinder, meansfor operating the element of the valve for said other cylinder,"the lastreferred to means including a device carried by said slide, andautomatically operating means for supplying fluid to said cylinders at apredetermined constant pressure.

8. In apparatus of the class described, the combination of a support, aslide reciprocatably mounted on said support, means for continuouslysupplying work v relative totsaid slide, a fluid operated mechanism foroperatingsaid slide, a fluid operated mechanism mounted on said slidefor cutting the work into sections, means arranged to be actuated by thework for controlling said slideoperating mechanism, means actuated bythe movement of the slide for controlling the movement 'of said cuttingmechanism, and a fluid I system for supplying fluid at a constant'pressure to said mechanisms. i,

9. In apparatus of the class described, the combination of a support,- aslide reciprocatably mounted on said support, means for continuously.

supplying'work relative to said slide, a driven cutterreciprocatably-supported' on said, slide,

separate mechanisms for reciprocating said slide nately controlling thesupply of fluid to and its:

discharge from each .end of saidadjacent cylinand said cutter, each saidmechanism comprising a cylinder and a valve having an inlet and anoutlet, a fluid connection to each end of the adjacent cylinder and avalve element for alterder, means, including a'device disposed in thepath of movement of the work, for operating the 'valve element whichcontrols the supply of fluid to thecylinder for reciprocating saidreciprocating slide, co-acting devices between said support and slidefor operating said valve element which controls the supply of fluidtothe cylinder for reciprocating said cutter, and means automati callyoperating to supply'fluid to the inlets of said valves at apredetermined constant pressure.

of fluid therefrom, means including a device ar- 10. In apparatus. ofthe class described, the

combination of a support, a slide reciprocatably' mounted on saidsupport, means for continuously supplying work relative. to said slide,a support reciprocatably mounted on said s1ide,a motor and a cutterdriven thereby mounted on the last mentioned support, separatemechanisms for reciprocating said slide and said last mentioned support,each 1 said mechanism comprising a cylinder and a valve having an inletand an outlet, a liquid connection to each end of thearranged to beactuated by the work for controlling the operation of said valve elementrelated to the mechanism for operating said slide, co-acting means onsaid first mentioned support and slide for controlling the operation ofthe valve element related to the other mechanism, 1 and meansautomatically operating to supply fluid to the inlets of said valves ata predetermined constant pressure.

11. A machine of theclass described, adapted for operating on atraveling workpiece, comprising: a slidably mounted slide plate;hydraulic means for reciprocating said slide plate; a work tool foroperating on said workpiece; a holder for said tool movable toward andaway from said workpiece; a supporting member movable in unison withsaid slide plate 'for supporting said tool holder; hydraulic means formoving said tool holder toward and .away from said workpiece; controlmeans for controlling the operation of said last-named hydraulic meansand effecting a movement of said tool holder toward said workpiece uponthe sliding of said plate in one direction during the sliding movementof said plate in said direction a predetermined distance;

means for controlling said first-named hydraulic means for eflecting aslidable movement of said slide plate in said direction; means forcontrolling said second-named hydraulic means for effecting a movementof said tool holder away from said workpiece upon movement of said slideplate in said direction, said predetermined distance; and control meansfor effecting the operation of said first-named hydraulic means for 1moving said slide plate in the opposite direction,

upon the movement of said tool holder away 40 from said workpiece apredetermined distance.

12. A machine of the class described, adapted for operating on atraveling workpiece, comprising: a slidably mounted slide plate;hydraulic means for reciprocating said slide plate; a work a tool foroperating on said workpiece; a holder for saidtool movable toward andaway from said workpiece; a supporting member movable in unison withsaid slide plate for supporting said tool holder; hydraulic means formovin 5 said tool holder toward and away from said workpiece; controlmeans for controlling the operation of said last-named hydraulic meansand efiecting a movement of said tool holder toward said workpiece uponthe sliding of said plate in one direction during the sliding movementof said plate in said direction a predetermined distance; means forcontrolling said firstnamed hydraulic means for effecting a slidablemovement of said slide plate in said direction; means for controllingsaid second-named hydraulic means for effecting a movement of said toolholder away from said workpiece upon movement of said slide plate insaid direction, said slide plate; hydraulic means for reciprocating saidslide plate; a work tool for operating on said workpiece; a tool holderfor'said work tool; hydraulic meansfor moving said tool holder towardand away from said workpiece; control means engageable with saidworkpiece and adapted, upon engagement therewith, for effecting theoperation of each of said hydraulic means for sliding said slide platein one direction and moving said tool holder toward said workpiece foroperating thereon; a control means operable, upon the sliding of saidslide plate a predetermined distance, for eflecting the operation ofsaid second-named hydraulic means for movin said tool holder away fromsaid workpiece; and means operable, upon the movement of said toolholder 'away from said workpiece a predetermined distance; for operatingsaid first-named hydraulic means for moving said slide plate in theopposite direction.

14. A machine of the class described, adapted for operating upon atraveling workpiece fed therethrough, comprising: a slidably mountedslide plate; hydraulic means. for reciprocating said slide plate; a worktool for operating on said workpiece; a tool holder for said work tool;hydraulic means for moving said tool holder toward and away from saidworkpiece; control means engageable with said workpiece and adapted,upon engagement therewith, for effecting the operation of each of saidhydraulic means for sliding said slide plate in one direction and movingsaid tool holder toward said workpiece for operating thereon; a controlmeans operable, upon the sliding of sald slide plate a predetermineddistance, for effecting the operation of said second-named hydraulicmeans for moving said tool holder away from said workpiece; meansoperable, upon the movement'of said tool holder away from said workpiecea predetermined distance, for operating said first-named hydraulic meansfor moving said slide plate in the opposite direction; and a supportingmember movable in unison with said slide plate for supporting saidsecond-named hydraulic means and said tool holder.

15. A machine of the class described, adapted for operating on atraveling workpiece fed therethrough, comprising:; a slidably mountedslide plate; hydraulic means for reciprocating said slide plate; a toolholder; a tool mounted on said tool holder and movable toward and awayfrom the workpiece; hydraulic means "for reciprocating said tool holder;means for mounting said predetermined distance; control means foreffecting the operation of said first-named hydraulic means for movingsaid slide plate in the opposite direction, upon the movement of saidtool holder away fromsaid workpiece a predetermined distance; and meansfor regulating the 7 speed of operation of each of said hydraulic means.

therethrough, comprising: a slidably .mounted second-named hydraulicmeans on said slide plate for movement in unison therewith; a controlmechanism engageable with the traveling workpiece and adapted uponengagement therewith for operating said first-named hydraulic means forsliding said slide plate in one direction and said second-namedhydraulic means for moving the work tool toward theworkpiece;

means operable, upon the sliding of said slide plate a predetermineddistance, for controlling the operation of said second-named hydraulicmeans for efiecting a movement of said work tool away from saidworkpiece; and control means operable upon the movement of said worktool away from said workpiece a predetermined distance for effecting anoperation of said first-named hydraulic means for moving said slideplate in the opposite direction.

16. A machine of the class described, adapted for operating on atraveling workpiece fed therethrough, comprising: a slidably mountedslide plate; hydraulic means for reciprocating said slide plate; a toolholder; a tool mountedon said tool holder and movable toward and awayfrom the workpiece; hydraulic means for reciprocating said tool holder;means for mounting said second-named hydraulic means on said slide platefor movement in unison therewith; acontrol mechanism engageable with-thetraveling workpiece and adapted upon engagement therewith for operatingsaid first-named hydraulic I means for sliding said slide plate in onedirection and said second-named hydraulic means for moving the work tooltoward the workpiece; means operable, upon the sliding of said slideplate a predetermined distance, for controlling the operation of saidsecond-named hydraulic means for effecting a'movement of said work toolaway from said workpiece; control means operable uponthe movement ofsaid work. tool away from said workpiece a predetermined distance forefiecting

